Laminated rubber mounting



2 sheets-sheet@ Filed Sept. 27, 1935 Dec. 8,1936. E. o. scHJoLINLAMI'NATED RUBBER MOUNTING 2 Sheets-Sheet 2 Filed Sept. 27, 1955Patented Dec. '8, l1936 PATENT OFFICE 2,063,758 LAMINATED RUBBERMOUNTING Eric Olle Schjolin, Pontiac, Mich., assgnor to General MotorsCorporation, Detroit, Mich., a corporation of Delaware ApplicationSeptember 27, 1935, Serial No. 42,390

claims.

This invention relates to motor vehicles and more particularly to thattype of construction in which a transverse member of the chassis frameis resiliently supported at opposite ends 5 on a -pair of independentlysprung wheels.

A primary object of the invention is to provide in a chassis frameassembly, a cushioning connection between the wheel suspension carryingmember and the frame members joined thereto, for reducing body noisesincited by road reaction at the wheels.

A further object is to provide means acting to resist relativerotational and horizontal displacement of the suspension carrying framemember whereby the cushion connection is relieved from torque stressesand brake reaction.

In one embodiment of the invention the transverse framing member, to beresiliently supported on the road wheels, passes Athrough sleeves ofcushioning material enclosed within brackets carried by the longitudinalframing members and a torque arm or arms rigid with the transversemember extend angularly therefrom for pivotal connection at its end withan adjacent longitudinal frame member. In another embodiment the torquearm is retained but the cushioned connection consists of a compositerubber and metallic construction in which there are combined laminationsof metal. and

rubber or other elastic deformable material. The rubber preferably actsin shear and the arrangement of laminations may be such as to aiord anydesired combination of load capacities and spring rate values.

For a better understanding of the invention reference may be had to theaccompanying drawings wherein Figure 1 is a fragmentary view of avehicle with the transverse framing member shown in section on a linelongitudinally of the vehicle with other parts in elevation; Figures 2and 3 are detail sectional views taken, respectively, on lines 2-2 and3--3 of Figure 1; Figure 4 is a sectional view taken on line 4-4 ofFigure 2; Figure 5 is a view similar to Figure 1 showing a modified formof cushion connection; Figure is taken on line 6 6 of Figure 5 andFigures 7, 8 and 9 each show in section a1- ternative forms of thecushioning unit.

Referring to the drawings the chassis frame assembly includes a pair oflongitudinally extending and transversely spaced members, one of whichis shown at I, and a transverse member shown at 2. At each end of thetransverse framin member 2 there is carried a suspension unit 3 ofsuitable design through which a wheel 4 is independently sprung.

For joining the transverse and longitudinal framing members, eachlongitudinal member is provided with a bracket 5 bolted or otherwise 5rigidly secured thereto, which 'in cooperation with a removable cap 6receives therein the transverse member 2. A strip 1 of rubber or otherelastic deformable material is wrapped around the framing member 2 andheld within 10 the bracket by the cap piece 6. If desired the rubbersleeve may be molded and vulcanized to either or both of the metal partsengaged thereby. By this construction the metal parts are insulated fromeach other and the rubber sleeve 15 clamps shocks and prevents thetransmission of' noises from one frame member into the other and intothe passenger compartment. of the vehicle.

To relieve the cushion connection from brake torque reaction or otherturning tendency there may be provided adjacent each longitudinal framemember a rigid arm 8 secured at one end to the transverse member 2 by acap piece 9 and keyed thereto as at I0. At its opposite end 25 the arm 8is pivoted by means of a pinA II to the frame member I. As shown in thedrawings the pivotal connection includes a pair of angular plates I2 forreceiving the pin II and through which extend a pair of clamping bolts30 I3 passing on opposite sides of the frame member I, for connectionwith a clamping plate I4 on the upper side of the frame member. A pad I5of cushioning material between the underside of the frame member I andthe plates I2, a sim- 35 ilar pad I6 between the frame member and theupper plate I4, and sleeves I1 surrounding the clamping bolts, serve toinsulate the torque arm from the chassis frame and eliminates metalliccontact. This particular form of pivotal con- 40 nection is illustratedmerely for the purpose of disclosure and it will be understood thatother forms of connections may be employed.

In the laminated composite construction shown in Figures 5 and 6 thereare employed a 45 pair of metal plates 20 and 2l adapted for connectionwith the transverse member 2 and an intermediate plate 23 adapted forconnection with the longitudinal frame member I. The several plates arespaced apart and insulated from one another by the use of rubber orother similar material'as indicated at 24. The insu- 'lating rubber maybe in the form of separate strips surface bondedjto the several platesor may be an integral mass molded with the plates embedded therein. Inthis form of the inven tion the rubber insulation supports the load inshear. The cushioning unit preferably is 1ocated or confined within acasing 26 bolted or otherwise anchored to the longitudinal frame member.Optionally the outer faces of the rubber body could be surface bonded tothe interior of the casing 26, but it is proposed merely to have theseparts in surface engagement, with the casing acting primarily as aprotective enclosure for the cushioning unit and into which the unit isreadily insertable. f

In the embodiment shown in Figure 'I the molded rubber body 30 hasoating therein a reinforcing metal plate 3| and a pair of metal plates32e-32, for attachment with one of the frame members and extendingpartly into the rubber body in alinement with a similar pair of plates33-33 for attachment to the other frame member. Attaching'plates for therespective frame members arranged end to end are shown at 35 and 36 inFigure 8 embedded within the rubber pad 31. In this embodiment theplates of the cooperating pairs are arranged back to back and theirinner ends are each turned outwardly as at 38 to interlock with therubber pad molded thereabout and thereby reduce strain on the surfacebond. In Figure 9 the rubber pad 40 has embedded therein the spacedmetal plates 4I, 42, 43 and 44 and alternate plates are intended forrigid connection, respectively, with the transverse and longitudinalframing members.

I claim:

1. In a motor vehicle, a cushioning connection for use between a pair offraming members, including a rubber strip, a pair of metal parts adaptedfor rigid association with said framing members and arranged on oppositesides of the rubber strip with their adjacent faces surface bonded tothe rubber strip, rubber strips surface bonded to the remot'e faces ofsaid metal parts, and a casing rigid with one of the frame members inembracing relation to said rubber and metal parts but free of mechanicalbond with the rubber strips.

2. In a motor vehicle, a pair of 'frame members, a casing rigid with oneof said members, a plate also rigid with said member and projected intosaid casing, rubber bonded to both faces of said plate within thecasing, a pair of plates rigid With the other frame member and projectedin spaced relation,'with the rst mentioned plate therebetween andsurface bonded on their inner faces with said rubber and additionalcushions of rubber bonded to the outer faces of said plates and engagedwith the interior of said casing Without a mechanical bond thereto.

3. In a motor vehicle, a pair`of frame members, a casing rigid with oneof said members, a series of plates extending into said casing in spacedrelation to each other and to the casing means connecting alternateplates rigidly with the respective frame members, and a body of rubberinterposed between the plates and casing and surface bonded to theplates and engaging the casing without mechanical bond.

4. In a motor vehicle, a pair of framing members, a casing rigid withone of the frame members, a body of elastic deformable material enclosedwithin said casing, a pair of plates molded in embedded relation withinsaid body and projecting therefrom in opposite directions beyond thecasing and means rigidly connecting said plates and membersrespectively.

5. In a motor vehicle, a pair of frame members, a pair of platesarranged end to end and adapted for rigid association one with one framemember and the other with the other frame member, and a body of rubberoverlapping both plates and being surface bonded thereto to afford acushioned connection between the frame members.

ERIC OLLE SCHJOIJLN.

